Get the RFBZ app
One installer for every RFBZ product. Sign in, paste the licence key you were given, and the product it unlocks is on your shelf — on this PC and on the next one.
Install, sign in, paste your key
The RFBZ app for Windows. One installer, no runtime and nothing else to add first.
Use the account you made on this site — or create one straight from the app's sign-in screen. Same account either way.
The server is asked whether the key is live, and what it unlocks appears on your shelf. A revoked key re-locks itself the next time you open the app.
What the app does on its own
It asks this server for the current build, downloads it, checks it against the hash the server published, and installs it — verified to the byte, and never mid-task.
Nothing is trusted from a file on the PC. Every key on your account is validated against this server before a product is shown as owned.
Press Install on a product you own and the app runs the install itself. There is no command to copy, and nothing to paste into a shell.
Fair questions
No. The app installs and signs in with no key at all — it just has nothing on the shelf until you paste one.
Yes, and your account is too. Sign in somewhere else with the same account and your products are there.
Revoked and expired keys say so, in the server's own words, when you paste them or when the app opens.